Error 03 - Communication error between indoor unit and wired remote

What does 03 mean?

There is poor communication between the indoor unit and its wired remote controller.

• Damaged or disconnected cable between indoor unit and remote
• Faulty wired remote controller
• Faulty communication board on indoor unit

Click steps to track your progress.

1. 1

   Check the cable connecting the indoor unit to the wired remote for damage or loose connections.

2. 2

   Ensure the remote controller is properly seated and connected.

3. 3

   Try resetting the system power to re-establish communication.

4. 4

   If the problem persists, the remote controller or the indoor unit's communication board may be faulty.